AMG_SLK
Approx 9000/100/90/89 (MCB).
After that i started reading the Bspec thread to maximise Bspecs and go in to Family cup racing. I'd never bothered with family cup before that time so I'm pretty confident with the above numbers.
I suspect that the topic host may have lost interest, but your numbers provide some good reference for this challenge. Also, if you've read the B-spec thread and attempted the hunt for 10000 points, the difficulties will be a little more obvious.
I suspect that completing the game competatively using B-spec will collect all 7000 floating points. The trick is to collect as many of the other 3000 points that are spread over 58 different tracks. Each of these tracks had course points and battle points for the four major power classes (A-low, B-med, C-high, D-super). Several of the tracks are used rarely, and then only with a limited power range.
Compared to your excellent no-Famly Cup scores, it might be possible to collect many more course points by entering cars that are too weak or powerful compared to the competition in races on rare tracks. The trick would be to also find ways to collect as many of the battle points at possible. You collected 90% of all points, but only 66% of the track points; I suspect more is possible, but I'm not quite currious enough to try it myself.
I was thinking that this task would be more diffucult without access to either of the C range cars suggested by the japanese author (RSC Rally Raid, Impreza Rally Prototype) that are only available through Special Condition events. However, it should be possilbe to buy these cars from another memory card - plenty of money should be available.